Motorists have to periodically refill the battery with distilled water, but it is not always at hand. In these cases, the use of rainwater or snow water. A good source of distilled water — “fur coat” in the freezer of a home refrigerator. However, this water may be unsuitable for battery due to the contained impurities. Purity soda you can determine with an ohmmeter and a simple device consisting of a glass of water and a pair of carbon electrodes. If the resistance shown in the figure an electrical circuit will be more than 30 ohms, then the water battery is good.
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